By Diana P. (Diana) on Thursday, September 17, 2009 - 04:59 pm:
Rachel, my grandfather always held that the UP soil was wonderful for growing potatoes and strawberries!  My grandmother used to serve delicious strawberries over ice cream every time we visited them as I was growing up; no wonder they were her favorite dessert! 
 
FRNash, thanks for the links to the potato farming information.   
 
My grandfather, Bill Cargo, was an agronomist specializing in potatoes and strawberries, and a County Agricultural Agent for the MSU Extension in the UP from the 1940's to 1960's.  He lived in Houghton for a good part of that time, and travelled to farms all over the area.  Perhaps Stewart Keskitalo (who had a message on your first linked page about attending the Extension meetings as a boy) might have known him. 
 
Through your second link, which leads to the MTU Archives,  http://digarch.lib.mtu.edu/, and searching for "potato", I was able to spot my grandfather in the photograph of men grading potatoes which were on a pool table.  :)